commit https://github.com/vim/vim/commit/b56195ed00a9a79aa6217cddbeedbc8cc7a5b6d8 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jul 28 22:53:37 2016 +0200 patch 7.4.2112 Problem: getcompletion(.., 'dir') returns a match with trailing "*" when there are no matches. (Chdiza) Solution: Return an empty list when there are no matches. Add a trailing slash to directories. (Yegappan Lakshmanan) Add tests for no matches. (closes #947)

Tests for writefile()

STARTTEST
:source small.vim
:%delete _
:let f = tempname()
:call writefile(["over","written"], f, "b")
:call writefile(["hello","world"], f, "b")
:call writefile(["!", "good"], f, "a")
:call writefile(["morning"], f, "ab")
:call writefile(["", "vimmers"], f, "ab")
:bwipeout!
:$put =readfile(f)
:1 delete _
:w! test.out
:call delete(f)
:qa!
ENDTEST